Home / 2,107.86-2,908.88-1,163.69

Finding the Fourth Proportional to 2,107.86, 2,908.88 and 1,163.69

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Solution

The fourth proportional to 2,107.86, 2,908.88 and 1,163.69 is: 1,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.86 : 2,908.88 = 1,163.69 : x
  2. Step 2: Convert to fraction form
    2,107.86/2,908.88 = 1,163.69/x
  3. Step 3: Cross multiply
    2,107.86x = 2,908.88 × 1,163.69
  4. Step 4: Simplify right side
    2,107.86x = 3,385,034.57
  5. Step 5: Solve for x
    x = 3,385,034.57/2,107.86
  6. Step 6: Final answer
    x = 1,605.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.